In brief
A clawback is a contractual right for your employer to take back compensation already paid. The money was in your account; the agreement says it can be demanded back. Sign-on bonuses, relocation packages, and retention awards are the most common carriers.
The common shapes
Full repayment within a fixed window: leave within twelve months of receiving a sign-on bonus, and you owe all of it back. Prorated repayment: the amount owed declines month by month until it reaches zero. And trigger-based clawbacks, tied to misconduct or restated financials, which are rarer for individual contributors but standard for executives.
The window usually runs from the payment date, not your start date. A bonus paid three months after you started has a clock that started three months late.
The tax asymmetry
You received the bonus net of taxes. If you repay it, you typically repay the gross. Recovering the tax difference is your problem, usually handled through an amended return or a deduction in the year of repayment. On a large bonus, the gap between what you received and what you repay can be thousands of dollars parked with the IRS until it is sorted.
Continued
“A bonus with a clawback is a loan wearing a bonus's clothes.”
What to do with this
Before you spend a bonus with a repayment clause, know the date it becomes fully yours. If you are weighing a new offer, the repayment belongs in the math: the stay-or-go tool treats it as a cost of leaving, which is exactly what it is.